"Really. All those bystanders and they just let them walk away? I realize the situation must have been chaotic, but found this really disturbing."
It happens all the time in America, like it or not. When the Carr brothers made it clear they were about to shoot five people in the back of the head after they obediently knelt (the guy only had a little .280), not one of the men risked his life, not even as he heard his friends being shot one by one. They obediently knelt and got one in the back of the head.
Lets not pretend that we are braver than anyone else.
Correction: Carr brothers had a .380. I said .280! In a hurry, gotta go pick up my neice at the train (prayers it doesn't get blown up?).